package Demo1;

public class Sub extends Base {
   private int z;

   public Sub(int x, int y, int z) {
      super(x,y);
      this.z=z;
   }

   public int getZ() {
      return z;
   }
   public int calculate(){
      return super.getX()*super.getY()*this.getZ();
   }
}
